The accused has been arrested based on the girl's complaint.
In West Bengal, a Class 12 student of Patha Bhavan, which comes under Visva Bharati University, has alleged repeated rape and blackmail by a Bangladeshi research scholar.
According to the police complaint filed by the girl, who too belongs to Bangladesh, the research scholar repeatedly raped her for the last few months by threatening to upload her objectionable photographs on the Internet.
"On the basis of the girl's complaint, we have arrested a PhD student of the university and presented him before a court seeking five days' police custody," Bolpur sub-divisional police officer Surya Pratap Yadav said.
Police said the research scholar was known to the girl and was also her local guardian.
The complaint was filed on Friday by the girl's parents who reached the university after she told them about her ordeal.